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Generating sample error coefficients

  • US 8,548,804 B2
  • Filed: 10/19/2007
  • Issued: 10/01/2013
  • Est. Priority Date: 11/03/2006
  • Status: Active Grant
First Claim
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1. A method of determining a sample error coefficient between a first signal and a similar second signal comprising the steps of:

  • receiving the second signal via a communications channel, the second signal being a transmitted version of the first signal;

    dividing the first signal into a first plurality of segments;

    dividing the second signal into a second plurality of segments;

    determining a first periodicity measure of one of the first plurality of segments and a second periodicity measure of one of the second plurality of segments;

    determining that the first periodicity measure and the second periodicity measure exhibit similarity which exceeds a similarity threshold;

    determining a third periodicity measure of another of the first plurality of segments and a fourth periodicity measure of one of the second plurality of segments;

    determining that the third periodicity measure and the fourth periodicity measure exhibit similarity which exceeds the similarity threshold;

    generating a first ratio in dependence upon said first periodicity measure and said second periodicity measure and a second ratio in dependence upon said third periodicity measure and said fourth periodicity measure;

    determining a first segment sample rate error coefficient based on the first ratio;

    determining a second segment sample rate error coefficient based on the second ratio; and

    determining a sampling rate error coefficient based on both the first and second segment sample rate error coefficients.

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